Week 9 - Challenge 3 - Bumper

BUMPER CHALLENGE

AIM:-to create a body of bumper from the input given which was the A-surface of a bumper. the created body should be closed solid volume which shpuld be feasible for manufacturing and tooling.the draft angle and drafte analysis of the component should be done.

In model proper tree structure should be mentioned and publications of tooling axis,A,B and C surfaces to be done.

INPUT GIVEN:-

• A-surface
• thickness of component is 3mm
• Draft angl is 3 degrees

CREATION OF TOOLING AXIS:

Tooling axis is the direction in which a core cavity of mold opens.this axis is very important to determine the orientation of the component in mold ,core and cavity design.

the tooling axis is created by the inertia method by using the steps as follow

• create the point
• the component is viewed in all axes X,Y, and Z.
• it is determined that the X-axis will be the direction for the tooling axis and a line is created using the point and X direction of the line.

DRAFT ANALYSIS OF A SURFACE:

Draft analysis of the surface is caried to check if the surface or part can be manufactured with the required draft angle.

draft angle is needed for the component to clear the core and cavity surface as it would have shrunk towards the centre while cooling.

The draft angle in this design is 3 degrees.As A surface is a single surface there wont be much difference in color. the draft analysis of A surafce is shown below.

CREATING CLASS B SURFACE:

The A surface is offesetted by 3 mm as it is the thickness required.

The offset surface is the B surface but had some issues like in some areas shown in below image

the areas where the B surface has issues are corrected by closing them using commands like multi section,sweep,offset and extract.

finally all the created surface are trimmed or joined to geother with offset surfaces done earlier.then created a single single surface which will act as the final B-surface.

CLASS B-SURFACE

CREATION OF CLASS C SURFACE

The A and B surfaces are connected by another single surface which is called C surface.

It is created by using sweep with A surface acting as a reference surface and curved created from the boundary of the same surface.

Sweep with draft direction is also used to create A-surfaces.

TREE STRUCTURE